Type:Smoke Detector Installation height:above 2m Sounder level:85dB Features 1. support three big alarm, independent sound and light alarm. Support two kinds of alarm methods, sound and flash & wireless transmission 2. wireless transmission network alarm 3. 360 degrees all-round detection of smoke alarm, no dead ends, reliable 4. built-in high-sensitivity induction technology, reliable, safe 5. ultra-low power microcontrollers + optoelectronic principles of technology, long standby battery life of 1 year 6. Full snap-fit patent structure of easy to install and no need commissioning 7. Elegantly designed, aesthetically pleasing appearance, dust-proof 8. Light top designed principle with alarm light 360visual 9. Adopting self-adoption technology that can make dynamic compensation for environment variation and aging components to extend using time 10. Owning self-test function can test inner circuit real time to keep detector lasting working fine 11. Adopting ultra-low power micro technology and photoelectric principle making standby time for long 12. adopting high-performance photo of a collection of two bidirectional scattering patent technology, stable, reliable, accuracy 13. Low battery alarm function, when the battery voltage lower than 6.8V, It will make warning tone out 14. The housing is designed to full rotary detachable buckle of easy maintenance 15. Product size: 10x3.2cm Application It can be alarm independently, also can be paired with alarm host of 433Mhz frequency. Like GSM alarm host with SMS function, triggering host, it will alarm, send notification and calling to your mobile phone immediately